fio: (g=0): rw=randrw, bs=4K-256K/4K-256K, ioengine=posixaio, iodepth=8
...
fio: (g=0): rw=randrw, bs=4K-256K/4K-256K, ioengine=posixaio, iodepth=8
Starting 3 threads
Threads: 3
Threads: 3
Threads: 3: [mmm] [33.3% done] [ 15041/ 69957 kb/s] [eta 00m:06s]
Threads: 3: [Fmm] [40.0% done] [  9993/ 44738 kb/s] [eta 00m:06s]
Threads: 3: [FmF] [45.5% done] [  1866/ 12495 kb/s] [eta 00m:06s]
Threads: 3: [FmF] [66.7% done] [   309/ 33313 kb/s] [eta 00m:03s]
Threads: 3: [FFF] [100.0% done] [   805/     0 kb/s] [eta 00m:00s]
Threads: 3: [FFF] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 3: [FFF] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 3: [FFF] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 3: [FFF] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
Threads: 3: [FFF] [100.0% done] [     0/     0 kb/s] [eta 00m:00s]
fio: ioengines.c:195: td_io_queue: Assertion `(io_u->flags & IO_U_F_FLIGHT) == 0' failed.
fio: pid=17817, got signal=6
Threads: 2: [V_V] [76.5% done] [ 27696/     0 kb/s] [eta 00m:04s]
Threads: 2: [V_V] [100.0% done] [ 62619/     0 kb/s] [eta 00m:00s]
Threads: 2: [V_V] [100.0% done] [ 66276/     0 kb/s] [eta 00m:00s]
fio: (groupid=0): err= 0: pid=17816
  read : io=100MiB, bw=6,766KiB/s, runt= 15485msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  257, avg=19.07, stdev=37.21
    bw (KiB/s) : min=    9, max=37507, per=99.59%, avg=15636.42, stdev=15424.87
  write: io=89,964KiB, bw=7,318KiB/s, runt= 12587msec
    slat (msec): min=    0, max=    1, avg= 0.00, stdev= 0.03
    clat (msec): min=    0, max=  195, avg= 1.33, stdev= 9.45
    bw (KiB/s) : min=    0, max=24642, per=81.75%, avg=16447.25, stdev=11228.39
  cpu          : usr=12.17%, sys=4.78%, ctx=9798
  IO depths    : 1=38.8%, 2=23.7%, 4=25.8%, 8=11.6%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=50.1%, 4=14.6%, 10=20.5%, 20=4.2%, 50=2.9%, 100=3.5%
     lat (msec): 250=3.9%, 500=0.1%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=17817
  cpu          : usr=0.00%, sys=0.00%, ctx=0
  IO depths    : 1=0.4%, 2=74.9%, 4=5.4%, 8=19.2%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=62.8%, 4=11.5%, 10=2.4%, 20=0.3%, 50=1.3%, 100=9.5%
     lat (msec): 250=10.5%, 500=1.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%
fio: (groupid=0): err= 0: pid=17818
  read : io=100MiB, bw=6,763KiB/s, runt= 15504msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  251, avg=22.20, stdev=42.11
    bw (KiB/s) : min=   23, max=36474, per=98.69%, avg=15494.67, stdev=14677.70
  write: io=87,992KiB, bw=7,160KiB/s, runt= 12583msec
    slat (msec): min=    0, max=    0, avg= 0.00, stdev= 0.00
    clat (msec): min=    0, max=  206, avg= 1.43, stdev=11.80
    bw (KiB/s) : min=    0, max=58210, per=122.81%, avg=24709.75, stdev=24353.13
  cpu          : usr=11.35%, sys=5.73%, ctx=8902
  IO depths    : 1=26.4%, 2=35.2%, 4=26.4%, 8=11.9%, 16=0.0%, 32=0.0%, >=64=0.0%
     lat (msec): 2=52.5%, 4=12.3%, 10=21.7%, 20=2.6%, 50=1.6%, 100=3.6%
     lat (msec): 250=5.5%, 500=0.0%, 750=0.0%, 1000=0.0%, >=2000=0.0%

Run status group 0 (all jobs):
   READ: io=232MiB, aggrb=15,701KiB/s, minb=0KiB/s, maxb=6,766KiB/s, mint=15504msec, maxt=15504msec
  WRITE: io=242MiB, aggrb=20,120KiB/s, minb=0KiB/s, maxb=7,318KiB/s, mint=15504msec, maxt=15504msec

Disk stats (read/write):
  cciss!c0d0: ios=4578/3078, merge=953/58707, ticks=37768/1348904, in_queue=1387012, util=98.08%
4.93user 2.26system 0:15.84elapsed 45%CPU (0avgtext+0avgdata 0maxresident)k
568192inputs+494664outputs (0major+2451minor)pagefaults 0swaps